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Shares of the Silicon Valley giant has touched $600 for the first time, about a month after reaching the $500 mark.

Stocks climbed to new heights in part on rosy retail sales data, pushing the broad market to levels last seen in June 2008 and the Nasdaq composite index past the 3,000 milestone for the first time since 2000.

Stocks rose meekly Wednesday morning after their biggest loss this year as reassuring reports on productivity and hiring overshadowed jitters about the Greek debt crisis.

Stocks suffered their biggest losses in three months Tuesday, the first hiccup in a strong and steady rally to start the year. Wall Street worried about the global economy and waited while Greece pressured the last investors to sign on for its bailout.

Apple's market capitalization topped $500 billion in opening trading Wednesday, climbing to a mountain peak where few companies have ventured -and none have stayed for long.

Wall Street's bulls have reason to celebrate: The Dow Jones industrial average closed above the psychologically important 13,000 mark for the first time since the financial crisis began in 2008.

A rally on Wall Street will be put to the test next week, with the S&P 500 at its highest level since before the collapse of Lehman Brothers in 2008.

U.S. stocks moved higher in a choppy session Tuesday, with the Dow Jones industrial average moving above 13,000 for the first time since May 2008. The 13,000 level doesn’t hold a great deal of significance to market analysts, but “it’s nice to see a symbolic number,” Art Cashin, UBS director of floor operations, told CNBC. The Dow last moved above 13,000 on an intra-day basis on May 20, 2008. It last closed above that level on May 19, 2008.

U.S. stocks closed in on the psychologically important mark of 13,000 for the Dow Jones industrial average as optimism about the Greek bailout and the European financial situation sent stocks up in early trading.

Apple's stock broke above $500 for the first time Monday. It was the latest step in a rally that began more than two weeks ago, when the company reported staggering sales and profits for the holiday quarter.